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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2021-11-05 17:19:05 +0300 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2021-11-18 23:05:56 +0300 |
| commit | c035713998700e8843c7d087f55bce3c54c0e3ec (patch) | |
| tree | 6b5398c08fc4f9312aa87435422940f16a124924 /mm | |
| parent | ed2145c474c9015bc634e35f6d1a9b7767f3fbfc (diff) | |
| download | linux-c035713998700e8843c7d087f55bce3c54c0e3ec.tar.xz | |
mm: Add functions to zero portions of a folio
These functions are wrappers around zero_user_segments(), which means
that zero_user_segments() can now be called for compound pages even when
CONFIG_TRANSPARENT_HUGEPAGE is disabled.
Use 'xend' as the name of the parameter to indicate that this is an
excluded end, not the more usual included end. Excluding the end makes
more sense to the callers, but can cause confusion to readers who are
more used to seeing included ends.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/highmem.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/mm/highmem.c b/mm/highmem.c index 88f65f155845..819d41140e5b 100644 --- a/mm/highmem.c +++ b/mm/highmem.c @@ -359,7 +359,6 @@ void kunmap_high(struct page *page) } EXPORT_SYMBOL(kunmap_high); -#ifdef CONFIG_TRANSPARENT_HUGEPAGE void zero_user_segments(struct page *page, unsigned start1, unsigned end1, unsigned start2, unsigned end2) { @@ -416,7 +415,6 @@ void zero_user_segments(struct page *page, unsigned start1, unsigned end1, BUG_ON((start1 | start2 | end1 | end2) != 0); } EXPORT_SYMBOL(zero_user_segments); -#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #endif /* CONFIG_HIGHMEM */ #ifdef CONFIG_KMAP_LOCAL |